How to create a wooden box ( open top ) [ANSWERED]

Yeah its easy to make a box out of paper. you just cut out and tape together.
However wood is 3 dimensional so you have to take into account the thickness of wood.

Here's a calculator created by Mark from Amazingly.Services

Here's the link to the Excel / Google spreadsheet to calculate the sizes you need.
https://docs.google.com/spreadsheets/d/1eLQLtMJUWjlplA-zlF7Yxn-ONgaXTMLlYRhB8_qnKq8/edit?usp=sharing

Here's a screenshot of the sheet

And of course if you like a formula...

Where 

mt=material thickness

bw=box width

bh=box height

bd=box height

You will need

Qty 2 sides bd X (bh-mt)

Qty 2 front / back pieces (bh-mt) X bw - (mt x 2)

Qty 1 base bw X bd

otherwise enter the dimensions on the spreadsheet and let it work it out for you

https://docs.google.com/spreadsheets/d/1eLQLtMJUWjlplA-zlF7Yxn-ONgaXTMLlYRhB8_qnKq8/edit?usp=sharing

EAOE